# # Data product developed by Dr. E. Thiemann from the # Laboratory for Atmospheric and Space Physics, Boulder, Colorado # in the frame of the PROBA2 guest investigator program. # # Please address your questions to E. Thiemann (thiemann@lasp.colorado.edu) and # to the LYRA Principal Investigator M. Dominique (marie.dominique@oma.be) # # PROBA2 data products are open to all. # Users should however refer to the following paper: http://arxiv.org/abs/1708.08833 # and acknowledge the instrument according to the rules described # at http://proba2.oma.be/data/termsOfUse in their papers and presentations # # Website reference http://proba2.oma.be/lyra/data/EarthAtmosphere/ # # Description: # Summed neutral N2 and O number density profiles, spanning altitudes between 150 and 400 km # retrieved from LYRA data acquired during occultations by the unit 3 (backup unit) zirconium # channel (bandpass: 1-2 nm + 6-20 nm). # # Radial distance is the distance from the center of Earth expressed in km to which the density corresponds. # Density O-N2 provides the summed number density of neutral O and N2 in units of radial distance and cm^-3. # The systematic error is a signed value (asymmetric) in fractional units and is primarily from the error made by # assuming that the absorption cross-sections of O and N2 are equal; a secondary source of systematic error is # from using a single-scale height atmosphere in the reference atmosphere used by the retrieval algorithm. # The random error is an unsigned value (to be applied symmetrically to the measurement) in fractional # units and gathers the uncertainties from solar spectra, solar variability and measurement noise. # Both uncertainties are described in http://arxiv.org/abs/1708.08833. # The Longitude and Latitude (in degrees) columns refer to the tangential point along the # line-of-sight, where most of the absorption occurs. # # Scale height = 47.624869 km # Date (UTC) = 2014-01-21T08:52:43.046 # Date (julian) = 2456678.86994266 # # Radial distance Density O-N2 Systematic error Random error Longitude Latitude 6507.1789 5.6781086e+10 0.077115582 0.034447978 -10.737404 54.372163 6509.4869 5.2205232e+10 0.087561597 0.035143966 -10.914596 54.217259 6511.7950 4.7491291e+10 0.098118182 0.035839954 -11.089616 54.060346 6514.1030 4.3727070e+10 0.10907151 0.036535942 -11.239830 53.925670 6516.4111 4.0442996e+10 0.12033880 0.037231930 -11.391569 53.789628 6518.7191 3.7357496e+10 0.13183999 0.037927918 -11.566674 53.632637 6521.0272 3.4181057e+10 0.14347515 0.038623905 -11.729402 53.486963 6523.3353 3.1208729e+10 0.15155435 0.039262204 -11.874313 53.357579 6525.6433 2.8866139e+10 0.15666388 0.039708795 -12.016751 53.225722 6527.9514 2.6817410e+10 0.16163245 0.041407173 -12.156486 53.091161 6530.2594 2.4622578e+10 0.16536371 0.044191877 -12.312203 52.944382 6532.5675 2.2340680e+10 0.16812465 0.047158255 -12.481237 52.787423 6534.8755 2.0226883e+10 0.16948477 0.048189477 -12.624225 52.650376 6537.1836 1.8363410e+10 0.16982496 0.048771777 -12.763960 52.515815 6539.4916 1.6730821e+10 0.17016059 0.050238742 -12.920205 52.359794 6541.7997 1.5219161e+10 0.16946795 0.051067196 -13.070453 52.209547 6544.1077 1.3836608e+10 0.16842015 0.051731754 -13.205012 52.074989 6546.4158 1.2717400e+10 0.16738170 0.052806664 -13.339572 51.940429 6548.7239 1.1790666e+10 0.16600354 0.053883814 -13.474132 51.805868 6551.0319 1.0964240e+10 0.16427140 0.055246952 -13.608692 51.669050 6553.3400 1.0196237e+10 0.16270093 0.055164171 -13.743253 51.529314 6555.6480 9.3825663e+09 0.16041331 0.054308872 -13.886074 51.380883 6557.9561 8.5827370e+09 0.15849675 0.053266836 -14.037027 51.223893 6560.2641 7.8550974e+09 0.15605797 0.052036162 -14.165306 51.085919 6562.5722 7.2545498e+09 0.15351566 0.050335448 -14.289515 50.951358 6564.8802 6.7803331e+09 0.15131584 0.048372672 -14.418462 50.816799 6567.1883 6.3621580e+09 0.14940190 0.046457979 -14.547847 50.682239 6569.4963 6.0018419e+09 0.14775122 0.044884729 -14.672142 50.547678 6571.8044 5.6635935e+09 0.14636141 0.044283577 -14.797410 50.411662 6574.1125 5.3013905e+09 0.14419774 0.042800992 -14.942324 50.248635 6576.4205 4.9358562e+09 0.14231714 0.040887373 -15.077017 50.096852 6578.7286 4.5859427e+09 0.13986093 0.037499119 -15.196051 49.962290 6581.0366 4.2927706e+09 0.13748456 0.035585519 -15.315085 49.827730 6583.3447 4.0420945e+09 0.13553956 0.034847206 -15.434118 49.693171 6585.6527 3.8019549e+09 0.13323627 0.033448928 -15.553152 49.555866 6587.9608 3.5832505e+09 0.13130431 0.033371243 -15.672186 49.416130 6590.2688 3.3843170e+09 0.12857314 0.030561978 -15.791220 49.279491 6592.5769 3.2033428e+09 0.12547633 0.027513183 -15.910253 49.144930 6594.8850 3.0473771e+09 0.12219096 0.025686727 -16.025840 49.010370 6597.1930 2.8955056e+09 0.11856134 0.025661821 -16.139698 48.875811 6599.5011 2.7303176e+09 0.11623388 0.024959867 -16.267466 48.720382 6601.8091 2.5529477e+09 0.11543476 0.027426738 -16.398411 48.559586 6604.1172 2.3820427e+09 0.11382554 0.026140849 -16.507094 48.425027 6606.4252 2.2318199e+09 0.11344670 0.026739845 -16.616529 48.289717 6608.7333 2.1079083e+09 0.11080533 0.023712983 -16.730387 48.149981 6611.0413 1.9889256e+09 0.10784828 0.024932096 -16.843143 48.011347 6613.3494 1.8721226e+09 0.10701553 0.023701783 -16.951827 47.876786 6615.6574 1.7668900e+09 0.10566963 0.023271759 -17.060510 47.742226 6617.9655 1.6705605e+09 0.10495546 0.023759358 -17.169192 47.607667 6620.2736 1.5819610e+09 0.10423915 0.024855351 -17.276071 47.471304 6622.5816 1.4977377e+09 0.10283010 0.024603187 -17.379580 47.331568 6624.8897 1.4222843e+09 0.10118994 0.025338543 -17.485242 47.193987 6627.1977 1.3509296e+09 0.098995815 0.025393186 -17.593924 47.059428 6629.5058 1.2879291e+09 0.097624470 0.026017659 -17.700102 46.922364 6631.8138 1.2253027e+09 0.095595762 0.026013434 -17.803610 46.782629 6634.1219 1.1645058e+09 0.093796951 0.026335733 -17.907117 46.645749 6636.4299 1.1052764e+09 0.091988780 0.026382790 -18.010624 46.511188 6638.7380 1.0469353e+09 0.090540415 0.025639490 -18.110925 46.373420 6641.0460 9.9447192e+08 0.090700300 0.025148457 -18.209258 46.233684 6643.3541 9.4837358e+08 0.089661168 0.025246084 -18.311148 46.097506 6645.6622 9.0821731e+08 0.088045040 0.025761881 -18.414656 45.962948 6647.9702 8.6614553e+08 0.086457526 0.026948602 -18.514255 45.824480 6650.2783 8.2033705e+08 0.085219471 0.026318940 -18.612587 45.684744 6652.5863 7.7408189e+08 0.084448079 0.027411842 -18.710919 45.549269 6654.8944 7.3223754e+08 0.083272815 0.027655212 -18.809251 45.414710 6657.2024 6.9739255e+08 0.081357965 0.029135926 -18.907584 45.275540 6659.5105 6.6328415e+08 0.079958316 0.031728110 -19.005916 45.135805 6661.8185 6.3047893e+08 0.078586810 0.032951851 -19.099288 45.001028 6664.1266 5.9849760e+08 0.077323037 0.031742876 -19.192446 44.866331 6666.4347 5.6752915e+08 0.077409056 0.026993292 -19.285603 44.726595 6668.7427 5.4118931e+08 0.076281040 0.028128016 -19.378760 44.587347 6671.0508 5.1509412e+08 0.076234382 0.026866072 -19.471916 44.452788 6673.3588 4.9064853e+08 0.075683184 0.027995853 -19.565072 44.317392 6675.6669 4.6970073e+08 0.073524333 0.031075659 -19.658229 44.177656 6677.9749 4.4618225e+08 0.072136486 0.030972260 -19.754950 44.033960 6680.2830 4.2231240e+08 0.072334711 0.029502524 -19.863637 43.876970 6682.5910 3.9601758e+08 0.073033101 0.030876116 -19.960450 43.729874 6684.8991 3.7227439e+08 0.072939552 0.032699717 -20.048432 43.590139 6687.2071 3.5250292e+08 0.071006895 0.034227373 -20.139732 43.453721 6689.5152 3.3295739e+08 0.068319772 0.033552262 -20.232890 43.319159 6691.8233 3.1659820e+08 0.067130157 0.032807029 -20.322377 43.180929 6694.1313 2.9900142e+08 0.066037290 0.031076990 -20.410359 43.041194 6696.4394 2.8727875e+08 0.065636260 0.029858332 -20.494320 42.905479 6698.7474 2.7833024e+08 0.064223668 0.031243735 -20.577126 42.770920 6701.0555 2.6544078e+08 0.062147277 0.031490842 -20.664303 42.631990 6703.3635 2.5401515e+08 0.061839834 0.034584899 -20.752284 42.492255 6705.6716 2.4025390e+08 0.061929447 0.037862545 -20.840266 42.357242 6707.9796 2.2708624e+08 0.061707971 0.040046494 -20.928247 42.222683 6710.2877 2.1767277e+08 0.060474256 0.040552807 -21.011157 42.083050 6712.5957 2.0841975e+08 0.058392077 0.042936063 -21.093963 41.943561 6714.9038 2.0040744e+08 0.056379406 0.047371356 -21.176769 41.809000 6717.2119 1.9142683e+08 0.054329547 0.049861164 -21.259575 41.673841 6719.5199 1.7691875e+08 0.052615295 0.050875885 -21.342381 41.534106 6721.8280 1.6511848e+08 0.053018429 0.050553369 -21.425187 41.395320 6724.1360 1.5909897e+08 0.050757176 0.048790793 -21.507993 41.260761 6726.4441 1.5386662e+08 0.047176898 0.040955373 -21.590799 41.124902 6728.7521 1.5294675e+08 0.046655955 0.040694116 -21.673604 40.985166 6731.0602 1.4681976e+08 0.044929702 0.041869806 -21.754756 40.847089 6733.3682 1.3968942e+08 0.043760403 0.045923594 -21.832373 40.712552 6735.6763 1.3368078e+08 0.044796644 0.050011370 -21.914997 40.567006 6737.9844 1.2440932e+08 0.046434332 0.057271238 -22.005569 40.403977 6740.2924 1.1844521e+08 0.046175313 0.064549886 -22.090470 40.261737 6742.6005 1.1158018e+08 0.043279719 0.070073885 -22.173276 40.127176 6744.9085 1.0706922e+08 0.039477111 0.078496125 -22.251952 39.988487 6747.2166 1.0109493e+08 0.035001826 0.067286604 -22.329582 39.848754 6749.5246 95793430. 0.033945762 0.072134290 -22.402732 39.713499 6751.8327 94779150. 0.030499279 0.074063732 -22.475187 39.578938 6754.1407 92130855. 0.029116700 0.075987153 -22.552473 39.444379 6756.4488 90683783. 0.026510996 0.075321709 -22.630104 39.309792 6758.7568 85928993. 0.026997917 0.075305768 -22.707736 39.170077 6761.0649 80929220. 0.027870687 0.077973587 -22.785845 39.029147 6763.3730 75554767. 0.033600401 0.077573601 -22.870378 38.872155 6765.6810 72147672. 0.036107638 0.079655514 -22.949923 38.722290 6767.9891 68615730. 0.033830879 0.080868272 -23.022378 38.582555 6770.2971 64808701. 0.029260587 0.087600342 -23.094833 38.445308 6772.6052 63439461. 0.025335771 0.093198389 -23.167289 38.310749 6774.9132 60390558. 0.021535428 0.098796437 -23.239745 38.176190 6777.2213 57220457. 0.017927672 0.10439448 -23.312200 38.041631 6779.5293 57269504. 0.014033270 0.10999253 -23.392099 37.889525 6781.8374 53124508. 0.012602557 0.11559058 -23.476633 37.726495 6784.1454 50586190. 0.0062461447 0.12118863 -23.549570 37.590800 6786.4535 47919746. -0.0029783096 0.12678668 -23.622025 37.456094